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Direktori : /home/medipszd/www/bower_components/jquery-sparkline/src/ |
Current File : /home/medipszd/www/bower_components/jquery-sparkline/src/chart-pie.js |
/** * Pie charts */ $.fn.sparkline.pie = pie = createClass($.fn.sparkline._base, { type: 'pie', init: function (el, values, options, width, height) { var total = 0, i; pie._super.init.call(this, el, values, options, width, height); this.shapes = {}; // map shape ids to value offsets this.valueShapes = {}; // maps value offsets to shape ids this.values = values = $.map(values, Number); if (options.get('width') === 'auto') { this.width = this.height; } if (values.length > 0) { for (i = values.length; i--;) { total += values[i]; } } this.total = total; this.initTarget(); this.radius = Math.floor(Math.min(this.canvasWidth, this.canvasHeight) / 2); }, getRegion: function (el, x, y) { var shapeid = this.target.getShapeAt(el, x, y); return (shapeid !== undefined && this.shapes[shapeid] !== undefined) ? this.shapes[shapeid] : undefined; }, getCurrentRegionFields: function () { var currentRegion = this.currentRegion; return { isNull: this.values[currentRegion] === undefined, value: this.values[currentRegion], percent: this.values[currentRegion] / this.total * 100, color: this.options.get('sliceColors')[currentRegion % this.options.get('sliceColors').length], offset: currentRegion }; }, changeHighlight: function (highlight) { var currentRegion = this.currentRegion, newslice = this.renderSlice(currentRegion, highlight), shapeid = this.valueShapes[currentRegion]; delete this.shapes[shapeid]; this.target.replaceWithShape(shapeid, newslice); this.valueShapes[currentRegion] = newslice.id; this.shapes[newslice.id] = currentRegion; }, renderSlice: function (valuenum, highlight) { var target = this.target, options = this.options, radius = this.radius, borderWidth = options.get('borderWidth'), offset = options.get('offset'), circle = 2 * Math.PI, values = this.values, total = this.total, next = offset ? (2*Math.PI)*(offset/360) : 0, start, end, i, vlen, color; vlen = values.length; for (i = 0; i < vlen; i++) { start = next; end = next; if (total > 0) { // avoid divide by zero end = next + (circle * (values[i] / total)); } if (valuenum === i) { color = options.get('sliceColors')[i % options.get('sliceColors').length]; if (highlight) { color = this.calcHighlightColor(color, options); } return target.drawPieSlice(radius, radius, radius - borderWidth, start, end, undefined, color); } next = end; } }, render: function () { var target = this.target, values = this.values, options = this.options, radius = this.radius, borderWidth = options.get('borderWidth'), shape, i; if (!pie._super.render.call(this)) { return; } if (borderWidth) { target.drawCircle(radius, radius, Math.floor(radius - (borderWidth / 2)), options.get('borderColor'), undefined, borderWidth).append(); } for (i = values.length; i--;) { if (values[i]) { // don't render zero values shape = this.renderSlice(i).append(); this.valueShapes[i] = shape.id; // store just the shapeid this.shapes[shape.id] = i; } } target.render(); } });